<?php
	$s = "";
	for($i=1;$i<6;$i++)
	{
		$random = rand(0,9);
		$s = $s.$random;
		echo "<img src='number/".$random.".png' height =40 whidth =30>";
	}
?>
<input type="hidden" name="imgCaptcha" value="<?php echo md5($s)?>">